Dive into this giant photoset from yesterday’s TEDYouth — from setup to sessions to the crazy action on the breaks. Most images come from TEDYouth photographer Ryan Lash; a few from TED’s photo editor, Mike Femia.

Photoblogging Mike’s picks: TED’s photo editor Mike Femia points us to this stunning shot of JR waiting around during rehearsals on the TED stage. Femia says: “The oversized TED logo this year became a piece of stage furniture. People interacted with it like a physical object, as seen in this photo of TED Prize winner JR waiting backstage for his rehearsal. This is the photo exactly as it came out of Duncan’s camera.”